Motor mounting



Fe 1 1 2 I 9 7 R, ALBRECHT MOTOR MOUNTING Filed May 5 926 I N VE R.

Patented Feb. 15, 1927.

unrrnn s'ra'rss PATENTOFFJCE.

ROBERT ALBRECHT, O1? RAGINE, WIEJCONSIN, ASSIGNOR TO HAMILTON BEACH lviFG. CO., OF RACINE, WISCONSIN, A CORPORATION OF WISCONSIN.

IMOTOB MOUNTING.

Application filed May 5,

This invention relates to improvements in motor mountings, particularly adapted for yieldingly securing flat type electric motors to the head portions of sewing machines for electrically propelling the machine hand wheel.

it is one of the objects of the present invention to provide a. motor mounting for sewing machines adapted to yieldingly hold amotor in a hand wheel engaging position and so arranged that the mounting and motor may be manually pivoted to a position of disengagement with respect to the hand. wheelbut which automatically returns to normal position immediately upon being released.

A further object of the invention is to provide a. yieldingly pivotal motor mounting adapted for rigid attacl'iment to the side portion of a sewing machine head.

A further object of the invention is to provide a motor mounting for sewing machine heads having an adjustable wedge by which means the mounting and motor may be locked in a tilted position with the motor pulley wheel out of contact with the hand wlreel. to permit bobbin winding.

A further object of the invention is to provide a motor mounting of the class described which. is of very simple construction. is easily installed on a sewing machine head, is strong and durable, and is well adapted for the purposes described.

lVit-h the above and other objects in view, the invention consists of the improved motor mounting, and its parts and combinations as set forth in the claims, and all equivalents thereof.

In the accompanying drawing, in which the same reference characters indicate the same parts in all of the views:

Fig. 1 is an end view of a sewing machine head having the improved motor mounting attached thereto and holding the pulley wheel of a motor in engagement with the machine hand wheel;

F 2 is a side view of the same;

Fig. 3 is a sectional view taken on line ;l3 of Fig. 2; V

Fig. 41 is a fragmentary plan View illustrating a modified form of the invention; and

Fig. 5 is a side view thereof.

Referring now more particularly to Figs. 1, 2 and 3, of the drawings and the form 1926. ScriaI No. 106,924.

of the invention disclosed thereby, it will be seen that the numeral 8 designates a. sewing machine head, re-volubly carrying a hand wheel 9.

Secured to the side of the head 8 is one arm of an angular bracket member 11) bent at an angle slightly greater than a right angle. The extending arm portion of the bracket member is provided at its outer side edge portions with a pair of depending apertured cars 11. Positioned above the said portion of the bracket member is a saddle member 12 also having depending apertnred cars 13 which are adjacent the cars 11, as shown in Fig. 2. A pivot rod 14 is extended through the registering apertures of all of said ears, whereby the saddle member may pivot on the rod with respect to the bracket member and head.

A small flat type electric motor .15 is fastened to and carried by the saddle membeer in such a position that the pulley wheel 16 thereof is normally in frictional engagement wth the hand wheel 9 to drive the same. i

For the purpose of locking the mounting in disengaging position, a slidable bar or wedge member 17 is provided. Said bar member is interposed between the saddle member and the angular member 10, and it is provided with a medial longitudinal slot 18 through which the shank of a screw 19 extends, the end portion of the screw being threaded into the saddle member. Said screw also extends through the angular member and a. spring 20 coiled about said screw is confined between the screw head and a washer adjacent the nndersur face. of the member 10. One end of the bar member 17 is formed with an operating ear 21 for manipulation, while the other on d portion is off-set and inclined downwardly, as at 22.

In the normal position of the deviceshown in the drawings, the mounting is so positioned that the pulley wheel is in frictiona-l engagement with the hand wheel. By tightening or loosening the screw 19, the tension exerted by the pulley against the hand wheel may be increased or decreased. Due to the fact that the pivot point of the mounting is in alinement with the vertical center line of the motor, a slight outward pivotal movement will be suflicient to disengage the pulley and handwheels, as

shown by dotted lines in Fig. 1. This is accomplished by sliding the bar member 17 to the left in Fig. 2 whereby the oft-set portion 22 is interposed between the saddle and bracket members to tilt the saddle forwardly. Vith the pulley wheel thus disengaged, bobbins may be readily wound. hen the bar is returned to normal position, the expansion of the spring 20 will return the mounting to normal position.

The form of the invention shown in Fl l and 5 discloses a bracket or mounting of a hinge type. One hinge member 23 is socured to the side of the head 8 and said member has the usual tubular oft-set bolt receiving portions 24. n complementary hinge member 25 is secured to the motor 15 with its oil-set tubular portions 26 in vertical alinement with the portions 24-. A rod or bolt 27 extends through said tubular portions to pivotally join the complementary hinge members.

Coiled about the bolt 27 between the porlions 26 is a spring 28 having its end portions extending horizontally. One end portion bears against the head, as at 29, while the other end portion bears against the motor, as at 30.

lVith this arrangement, the motor may be hinged outwardly laterally away from the hand wheel. This movement will tend to wind the spring on the bolt and when the motor is released, the unwinding movement 01 the spring will automatically return the motor to its normal engaging position.

From the foregoing description it will be seen that the improved motor mounting is of very simple and novel. construction, and is well adapted for the purposes set forth.

\Vha-t I claim as my invention is:

l. The combination with a sewing machine head having a hand wheel, of a motor mounting, comprising a head engaging member se cured to the head, a motor, a motor engaging member secured to said motor and hinged to the head engaging member, and a coiled spring having an expansile and crmtractile engagement between said members and cxerting a force against said motor enga ing member inwardly of its hinge connection to normally hold the pulley wheel ol the motor in yielding engagement with said hand wheel.

2. The combination with a sewing machine head having a hand wheel, and a motor for driving said hand wheel, of a motor mounting comprising an angular bracket member secured to the side of said head, a saddle member secured to said motor and pivoted to said bracket member, and a manually, longitudinally movable member interposed be tween and engaging the bracket and saddle members for releasably locking the latter in a pivotal position whereby the motor is held away from the hand wheeL 3. The combination with a sewing machine head having a hand wheel, and a motor for driving said hand wheel, of a mot-or mounting comprising an angular bracket member secured to said head, a saddle member socured to said motor and pivoted to said bracket member, and a wedge member ongaging the bracket and saddle members for locking the latter in a pivoted position outwardly from the head.

4. The combination with a sewing machine head having ahand wheel, and a motor "for driving said hand wheel, of a motor mounting comprising an angular bracket member secured to said head, a saddle member secured to said motor and pivoted to said bracket member, and a sliding wedge men'n ber interposed between the bracket and saddle members for releasably locking the latter in a pivoted position outwardly from the head.

5. The combination with a sewing machine head having a hand wheel, and a motor for driving said hand wheel, of a motor mount ing comprising an angular bracket member secured to said head, a saddle member secured to said motor and pivoted to said bracket member, means engaging the bracket and saddle members for locking the latter in a pivoted position outwardly from the head, and a coiled spring confined so as to be contracted by an outward pivotal movement of said saddle member.

(5. The combination with a sewing machine head having a hand wheel, and a motor for driving said hand wheel, of a motor mounting comprising an angular bracket member secured to the side of said head, a saddle member secured to said motor and pivoted to said bracket member, longitudinally adjustable ]neans interposed between the bracket and saddle members for locking the latter in a pivoted position outwardly 'lrom the head, a coiled spring exerting a force against said saddle n'lelnber, and means for adjusting said spring so as to exert more or less tension.

7. The combinatimi with a sewing machine head having a hand wheel, and a motor for driving said hand wheel, oi a motor n'iounting, comprising an angular bracket member secured to said head, a saddle member soc-ured to said motor and medially pivotally attached to said bracket mcmltwer, a slotted \vcdging member interposed between the inner portion of said saddle member and the bracket member, a screw extending thrrmgh the slot of said wedging member and threaded into said saddle member, and a spring coiled about said screw and confined between the head thereof and the bracket member.

In testimony whereof, I affix my signature.

ROBERT ALBRECHT ill) 

